<template>
<div class="app-container">
    <!-- 顶部head区域 -->
    <mt-header fixed title="黑马程序员-vue项目">
	<span @click="goBack" slot="left">
    <mt-button icon="back" v-show="flag">返回</mt-button>
  </span>
	</mt-header>
    <!-- 中间的路由router-view区域 -->
	<transition >
		<router-view></router-view>
	</transition>
	
    <!-- 底部tabbar区域 -->
    <nav class="mui-bar mui-bar-tab">
			<router-link class="mui-tab-item-hc" to="/home">
				<span class="mui-icon mui-icon-home"></span>
				<span class="mui-tab-label">首页</span>
			</router-link>
			<router-link class="mui-tab-item-hc" to="/member">
				<span class="mui-icon mui-icon-contact"></span>
				<span class="mui-tab-label">会员</span>
			</router-link>
			<router-link class="mui-tab-item-hc" to="/shopcar">
				<span class="mui-icon mui-icon-extra mui-icon-extra-cart"><span class="mui-badge" id="badge">{{$store.getters.getAllCount}}</span></span>
				<span class="mui-tab-label">购物车</span>
			</router-link>
			<router-link class="mui-tab-item-hc" to="/search">
				<span class="mui-icon mui-icon-search"></span>
				<span class="mui-tab-label">搜索</span>
			</router-link>
		</nav>
</div>
</template>

<script>
export default {
	data(){
		return {
			flag: false

		}
	},
	created(){
		if(this.$route.path === '/home'){
			this.flag = false
		}else{
			this.flag = true
		}
	},
	methods: {
		goBack(){
			//点击返回
			this.$router.go(-1)
		}
	},
	watch: {
		'$route.path': function(newVal){
			if(newVal === '/home'){
				this.flag = false
			}else{
				this.flag = true
			}
		}
	}
}
</script>

<style scoped>
	.mint-header {
		z-index: 999
	}
    .app-container {
        padding-top: 40px;
		padding-bottom: 50px;
		overflow-x: hidden;
    }
	.v-enter{
		opacity: 0;
		transform: translate(100%);
	}
	.v-leave-to {
		opacity: 0;
		transform: translate(-100%);
		position: absolute
	}
	.v-enter-active,
	.v-leave-active {
		transition: 0.5s
	}
	 /* 改类名，解决tabbar无法切换的问题  */
	 .mui-bar-tab .mui-tab-item-hc.mui-active {
    color: #007aff;
	}
	.mui-bar-tab .mui-tab-item-hc {
    display: table-cell;
    overflow: hidden;
    width: 1%;
    height: 50px;
    text-align: center;
    vertical-align: middle;
    white-space: nowrap;
    text-overflow: ellipsis;
    color: #929292;
	}
	.mui-bar-tab .mui-tab-item-hc .mui-icon {
    top: 3px;
    width: 24px;
    height: 24px;
    padding-top: 0;
    padding-bottom: 0;
	}
	.mui-bar-tab .mui-tab-item-hc .mui-icon~.mui-tab-label {
    font-size: 11px;
    display: block;
    overflow: hidden;
    text-overflow: ellipsis;
	}


</style>